Charles a



UNITED STATES PATENT OFFICE.

CHARLES A. MAXFIELD, OFVNEW YORK, N. Y.

COATING ORWAT ERPROOFING PAPER.

SPEGIFIGATJ ION forming part of Iletters Patent No. 278,443, dated May 29, 18 83.

Application filed October 31, 1882. (N0 specimens) T 0 all whom it may concern:

Be it known. that], CHARLES A. MAXFIELD, a citizen of the United States. residing at New York,in the county of New York and State of New. York, have invented certain new and usefnl Improvements in Coating orWaterproofinglaper; and I do declare the following to be a full, clear, and exact description of the iiivention, such as. will enable others skilled in the art to which it appertains to make and use the-same. l

Myinvention relates to waterproofing paper; and it consists in coating or saturating paper with anatural bitumen or' wax known as ozocerite.

My invention is designed to supply a longt'elt want among meat and fish venders in producing a paper which will be water-proof, and

at the same time will not impartto the article inclosed within the paper discoloration or a disagreeable odor.

Paper has heretofore been rendered waterproof by means of paraflinawhich answers the purposewell; butowing toits cost it has not and cannot come into general use. Paper has also been rendered water-proof by means of coal-tar and its products; but owing to its offensiveodor it cannot be used to wrap provis ions of any kind,and its useis necessarily confined to wrapping hardware, or in wrapping articles to protect them from the ravages of insects. Incarrying out my invention'I utilize any of the well-known machines used in the manufacture of roofing-felt, in which a heating-tank is provided, and devices for removing a surplus of the coating or saturating material. I then place the ozocerite in the melting-tank and reduce itby heat to the desired consistency. I do not confine myself to the application of heat for reducing the ozooerite to a timid or semi-fluid condition,as this may be acplished by solvents or hychemical means. The paper, which is in long strips or rolls, is then and any surplus of the coating material we moved therefrom. The paper may then be passed through a drying-chamber, so that the paper can be cut to the desired size and packed into reams and bundlesyready for use. Imay find it convenient and desirable to take the paper asit comes from the paper-making machine and before it is quite dry and subject it to the action of the ozocerite.

The prime object of myinvention is to saturatethe ordinary wrapping-paper used by butchers and meatand fish venders with acornpound which will be odorless and colorlessthat is, will not discolor the article, and at the same time render it Water-proof and strong.

Another advantage of my invention is that MAXFIELD.

drawn through the melted or liquid ozocerite,

a much lighter paper can be used, and the 

